Airplane.



l. J. MURRAY.

AIRPLANE.

APPLICATION mu) ALIGJI, 19w.

Patented J une 11, 1918.

JJJZ Zr/ V JAMES JOSEPH MURRAY, 03' NEW YORK, N. Y.

AIRPLANE.

Application filed August 17, 1917.

To all whom it may concern:

Be it known that I, JAMES Josnrn Mun- RAY, a citizen of the United otates, residing at New York city, in the county of New Yorkand State of New'Yoi-k, have invented new and useful Improvements in Airplanes, of which the following is a specification.

This invention relates to airplanes and. particularly to the body construction thereof.

The object of the present invention is to produce a body frame of unusually strong and light construction; also one of which any slack in or distortion of certain parts of the frame may be taken up or co1npensated for.

A further object of the invention is to provide an airplane body frame embodying certain tensioning and bracing means accessible readily to the operator or mechanic who may in a short space of time, with the aid of a screw driver or the like, place the main members of the bod frame under tension and at the same time render the lines of the body true and uniform throughv out the entire extent thereof.

With the above and other objects in view, the invention consists in the novel suitable light tough material such as wood,

aluminum, compressed paper or any other material which may be adopted by the manufacturer. In a body of stream line formation, the hoops, which are positioned at intervals throughout the length of the body will vary in diameter in accordance with the stream line formation.

All of the hoo s 1 are connected by a circular series 0 stringers 2 and said stringers are arranged in diametrically opposite pairs and connected by diametricnl braces 3 preferably of wire although anydesired material may be used in a construction thereof, Each of the strin ers 2 is of tubular formation as shown in #1g. 2, com- Speciflcatlon of Letter: Patent.

Patented June 11, 1918. Berle! No. mane.

prising an outer arcuate wall 4 which con forms in curvature to and lies flush with the outer peripheries of the hoops Each tubular stringer also comprises a reversely curved arcuate inner wall 5 which is shown as substantially semi-circular.

The inner wall of each tdbular stringer 4 is f0 .ned witha hole 6 toreceive a nipple or strainer 7. This nipple or strainer 18 internally threaded to engage the th ended outer end portion of the respectiv brace 3 and said nipple or strainer has an enlarged head 8 the under surface of which is rounded or hemispheriodal to obtaih :1 good seat on the inner surface of the Wall :3. The outer wall 4 of the stringez is formed with an entrance opening 9 large enough to admit of the passage therethrough of the nipple 7 and its head 8 until the parts are brought into the associated relation illustrated in the drawings. Any desired number of braces may be used in conjunction with each hoop 1.

From the foregoing description, taken in connection with t 1e accompanying drawings it will now be seen that I have produced a bod frame for airplanes and other aircra t which is exceedingly s rong, thoroughly braced, and of light weight. It will. also be seen that any slack or distortion in the frame may be readily corrected by turning the nipples or strainers 7 with the aid of a screw driver or the like inserted through the openings 9. The nipples 7 also perform the additional function of fixedly connecting the hoops 1 and the stringers 4 as said nipples pass through holes formed in each hoop 1. The competed frame is of course intended to be inc osed by a covering or sheathing of fabric or any suitable material, this not being essential to the present invention which relates solely tothe construction of the frame of the body or nacelle.

I claim:

1. A body structure for aircraft comprising a plurality of hoops, a series ofritubular walls of the stringers, and a diametrical brace having its opposite end portions in threaded and adjustable engagement with said nipples.

2. body structure for aircraft comprising a plurality of hoops, a series of tubular stringers ronneeting said hoops at intervals throughout the eirmimterenee thereof, said stringers being arranged in diametrically opposite pairs, internally threaded and headed nipples extending through the inner 'alls ot the stringers, and a diametriral brace having its opposite end portions in threaded and adjustable engagement with said nipples, the hoops being formed in their outer peripheries with recesses in which said stringers are seated flush.

3. A bod structure for aircraft comprising a plura ity of hoops, a series of tubular stringers winner-ting said hoops at, intervals throughout. the eirr-innferenve thereof, said stringers being arranged in diametrir-all opposite pairs, internally threaded and headed n pples extending through the inner wall oi the stringers, and a diametriral lll'lltl' having its opposite end portions in thrratfld and adjustable engagement; with said nipples, said stringers being formed in their outer Walls with openings of sullieient, size to admit of the insertion and removal of the nipples.

-.l-. A body strurture for airrrat't (omprising a plurality of hoops, a series of tubular stringers connecting said hoops at intervals throughout the eirvululervnre thereof, said stringers being arranged in llltllllfllllttllly opposite pairs, internally threaded and headed nipples extending through the inner walls of the stringers, and adiainetrit-al brave having its opposite end portions in threaded and adjustable engagement. with said nipples, ear-h nipple passing through the inner wall of the respet-t ive stringer and also through a hole in the adjarent hoop and serving as a means for preventing relative llltlVlllltllb between the hoop and stringer.

In testimony hereof l atlix my signature. 

